Art. XXIII.— CJemeric Arrangement of the Bees allied 

 to ]?Ielis§ode!!i and Anthopliora. 



By 'W. H. Patton. 



The object of the present paper is to bring to Kght a number of char- 

 acters either unemployed hitherto by English writers or entirely new, 

 to describe several new generic types, and to relieve the American cata- 

 logue of a part of the confusion which has been caused by the recent 

 description of a multitude of species without regard to their afltimties 

 or generic position. 



The genera here treated may be divided into two groups, to which the 

 names Eucerw and Antliopliorw may be applied. PUstotrichia Morawitz, 

 an Algerian genus said to ]:esemble Tetralonia, does not appear to have 

 been sufficiently well described to have its position determined. The 

 Brazilian genus Monoeca Lepel. et Serv., with the inner spur of the pos- 

 terior tibiae serrate {^^visiblement dentee en scie^^), appears to be related 

 to Ancyloscelis rather than to Melissodes. All Uucerce and Antliopliorce 

 examined by me have both spurs of the posterior tibiae, as well as the 

 spur of the intermediate tibiae, channelled above and with both the edges 

 finely pectinate. 



EUCEE^. 



Paraglossse as long as the labial palpi, setaceous, ciliate on one side ; 

 labial palpi wing-margined, the first joint the longest, the third joint 

 not continuous with the second ; maxillary palpi with the basal joint 

 appressed to the maxilla and incrassate, the second joint attached ob; 

 liquely, the maxillary palpi not distinctly flattened. Border of the 

 labrum not thickened or deflexed. Ocelli in a line or curve. Wings 

 uniformly pubescent, the limb finely punctured; stigma small; marginal 

 cell lanceolate, not ai^jjendiculate ; origin of the first recurrent ner\Tire 

 beyond the origin of the cubitus. Posterior tibiae with an enclosure at 

 the base in both sexes. In the male the antennae elongate and the 

 clypeus more or less yellow. 



A. Two submarginal cells. 



EucERA Scop. 



Maxillary x)alpi six-jointed. 



There exists an undescribed genus, closely allied to Eucera, having 



only four joints in the maxillary palj)i. 



471 



